Long ago, a ferocious war, which came to be known as the Holy War, was waged. It was during this bloody conflict that humanity erected a magical barrier to keep both gods and demons from overrunning their world. Once the war was over, it was believed that peace would return. However, humanity soon began to turn on itself, and war began anew.

Many centuries after the Holy War, the Branshaldo Empire and the Aura Republic engaged in an extended war for control of the Grantria Peninsula. The conflict eventually ground to a halt and an uneasy truce was reached, as neither nation had the resources to continue fighting. Even so, the animosity between the two parties never faded, but smoldered beneath the surface, always threatening to explode into flames.

In the resulting tenuous peace, the people of the peninsula began to resume their normal lives, always aware that the war could resume at any time. It was against this backdrop that the protagonist begins their fight against rival factions, hordes of ravening monsters controlled by enigmatic puppet masters, and even their own dark impulses…